James j



(N0 Model) J. J. DEVINE.

BOLT; No. 315,748, Patented Apr. 14, 1885.

IITfl/GWZTOZ" UNITED STATES PATENT rrrcn.

JAMES J. DEVINE, OF PHILADELPHIA, PENNSYLVANIA.

BOLT.

SPECIFICATION forming part of Letters Patent No. 315,748, dated April it, 1885.

Application filed October 3, 1884. (No model.)

To all whom it may concern:

Be it known that I, JAMES J. Dnvinn, a citizen of the United States, residing at Phila' delphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in Bolts, of which the following is a specification.

My invention has relation to improvements in sliding bolts, and is specially intended to provide means for fastening a sliding bolt securely in position when it is shot home in the looking hearing or staple.

My improvements are fully described hereinafter, and the same clearly shown in the accompanying drawing, forming a part of this specification. I have also specifically pointed out the novelty in the claim hereto made, as required by statute.

In the drawing, the letter 'A represents the base-plate, provided with the usual bearings or sleeves, a, to receive the bolt, and having perforations by which it may be secured in position.

The letter B represents the sliding bolt,

which is of the fiat variety, fitted to the bearers or sleeves, and has a finger lug or projection by which it is moved back and forth in the bearers.

The letter (lrepresents the keeper or catchpiece, usually fixed to the frame of the door, to receive the free end of the sliding bolt.

To the sliding bolt at a point, a, so that its distance of slide shall not be interfered with, is'pivotally secured a locking-lever, D. This locking-lever is pivoted to the sliding bolt at a point which, when the bolt is shot forward, shall set the base of the lever against the forward bearer, and the length of the lockinglever is such that when the bolt is shot forward the free end of the lever shall set against the edge of the'rear bearer, substantially as shown in the drawing. The lock ing-lever is provided with a finger-hold, b, by which it may be lifted or placed in position, and the free end is formed with an inwardlyextending lip or flange, c, to prevent the lever from dropping below horizontality when in looking position.

The position of the locking-lever when not in looking engagement is shown in the drawing by dotted lines.

The invention is particularly adapted to be applied to a flat sliding bolt, and when so I used, it is readily seen, the device operates to efitectually bar the bolt against backward movement.

The operation is at once apparent on examination of the drawing. The bolt is slid forward,and the limit of motion being reached the locking-lever falls with its free end against the edge of the bearer on the plate, and the bolt is fastened in such position until released by lifting the lever and drawing the bolt back.

I am aware that a door-latch has been inade wherein a catch is extended through a slot in the rear edge of the loch-casing and formed with notches to set over the edge of the plate ofthe casing to hold the bolt in a locked or unlocked position, and that a spring-lock has been made with the rear end of the bolt projecting from the lock-casing, and having pivotally attached to it a lever adapted to be turned with its side or end against the out-- side of the end of the loch-casing. Further, I am aware that a doorbolt has been made wherein the bolt is chambered out on one side and formed with a central longitudinal slot, and a lever with a pivotal bearing in said slot arranged to turn into horizontal position against the end walls of the chamber in the bolt to hold itloclred or unlocked. Aunt and bolt lock has been made having a cam pivoted to a slotted loch-plate, which cam, when swung against a nut screwed on the bolt projected through the plate, holds the lockplate from moving horizontally.

My improvements are particularly applicable to a sliding bolt held in bearers, and consist in the specific construction stated in the claim.

What I claim is In combination with the base-plate and its bearers, and the flat sliding bolt fitted to move in the bearers, a locking-lever pivotally secured to the bolt, so that when the bolt is shot forward the locking-lever shall fall paral lel with the bolt and between two bearers of" the base-plate, substantially as and for the purpose set forth.

In testimony whereof I have hereunto subscribed my name in the presence of two attesting witnesses.

JAMES J. DEVINE.

Attest:

EDMUND B. SEYMOUR, Josnrn J. FAY. 

